PlainWater
Counties → Arizona

Cochise County, Arizona

Water Systems
104
Population Served
129,689
Total Violations
19,234
1,180 health-based
PFAS Detected
7
of 8 tested

Violation Analysis

100.0%
Systems with Violations
184.9
Avg Violations per System
6.1%
Health-Based Violations

Water Source Types

GW
49 systems (47%)
SW
1 system (1%)

PFAS Contamination

8
Systems Tested
7
PFAS Detected
87.5%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Cochise Arizona water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (50)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Bella Vista City Water System 20,045 1,564 Detected
Douglas City Of 16,656 929 Clean
US Army Fort Huachuca 15,603 972 Detected
Pueblo del Sol Water Company 12,804 2,721 Clean
Arizona Water Co - Sierra Vista 9,175 85 Detected
Arizona Water Co - Bisbee 8,707 32 Detected
Benson, City of Water System 5,355 253 Clean
City of Willcox 3,236 220 Clean
Bisbee Douglas Intl Airport 2,600 172 -
Adot San Simon Rest Area 2,500 62 -
Bella Vista Water South 2,178 425 -
East Slope Water Company 1,980 255 -
Town of Huachuca City 1,750 220 -
Southland Utilities - Golden Acres 1,614 211 -
Southern Sunrise WC Cochise Horseshoe 1,588 272 -
Tombstone City Of 1,545 744 -
Mescal Lakes Water System 1,390 160 -
Clear Springs Utility Main 1,385 57 -
St David Dwid 1,255 79 -
Cochise County Community College Distric 1,120 200 -
Pomerene Dwid 1,030 337 -
Adot Texas Canyon Rest Area 1,006 36 -
Whetstone Dwid 940 105 -
Elfrida Wid 800 298 -
Apple Annies Orchard 675 46 -
Naco Water Co Main 658 106 -
East Slope Water - West 655 198 -
Southern Sunrise WC Miracle Valley 620 217 -
Northern Sunrise WC Coronado 553 160 -
Bowie Wid 489 133 -
Aspb Kartchner Caverns 483 139 -
Douglas Border Patrol Station 450 143 -
Coronado Elementary 446 99 -
Palominas Elementary 421 60 -
Cs Winchester Water Company 402 128 -
Cs Holiday Water Company 395 99 -
Sierra Vista Mh Village 328 118 -
Northern Sunrise WC Mustang Crystal 315 467 -
San Simon Dwid 312 745 -
Fiesta Canning Co Inc 300 129 -
Dragoon Water Company 283 374 -
Valley View Elementary 231 95 -
Mountain View RV Park 200 27 -
Fort Bowie National Historic Site 200 29 -
Chiricahua Natl Monument Bonita Cg 200 29 -
Willow Lakes Property Owners Assoc 190 261 -
Whetstone Ranch Water System 183 24 -
Adot San Simon Port of Entry 175 49 -
Western Refining Speedway 2962 162 10 -
Monte Vista Water Company 150 353 -

Other Counties in Arizona

Maricopa County
215 systems · 4,392,896 served · 30,745 violations
Pima County
195 systems · 1,138,545 served · 30,465 violations
Pinal County
94 systems · 505,241 served · 20,790 violations
Mohave County
119 systems · 231,271 served · 20,586 violations
Yavapai County
238 systems · 223,192 served · 25,793 violations
Yuma County
51 systems · 217,720 served · 16,217 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Cochise County? ▼
Cochise County has 19,234 total drinking water violations across 104 water systems, of which 1,180 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Cochise County systems? ▼
Water systems in Cochise County serve approximately 129,689 people through 104 public water systems.
Has PFAS been detected in Cochise County water? ▼
Of 8 water systems tested for PFAS in Cochise County, 7 had PFAS detected (87.5% detection rate).
What types of water sources supply Cochise County? ▼
Water systems in Cochise County use GW (49 systems), SW (1 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 6.1% of Cochise County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.